Which of the following expressions is written in scientific notation? 0.2 × 10^-5 31.4 × 10^4 13 × 10^4 1 × 10^-3
2 answers:
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First, note that Then use the formula for the sum of perfect cubes:
Therefore,
The quadratic trinomial couldn't be factored anymore, so the expression
has two factors
and
Answer: correct choice is A.
Answer: Answer with Step-by-step explanation:
Since we have given that
Cost of party per person = $20.
Let the number of friends be 'f'.
Let the cost of party be 'p'.
According to question, our equation becomes
p= 2f
So, if p = 100, then f = p/2 = 100/2 = 50 if f = 10, then, p = 2f = 2 • 10 = 20 If p = 300 then, f = 300/2 = 150, If f = 20, then, p = 2f = 2 • 20 = 40 So, Table as follows:
Number of friends cost of party
50 100
10 20
150 300
20 40
